Crafted in incredibly soft and breathable organic cotton, Lucas Boys Briefs keep your little one cool, dry, and comfy throughout the day. Designed with minimal seams, this durable boys underwear has zero side seams to prevent chafing, as well as gentle hemmed leg openings. With a functional fly and a smooth elastic waistband that won’t roll down or leave marks, these undies just might be his new fave.


Key Features
Organic Cotton
Certified organic cotton fabric used throughout
Always Tagless
No scratchy or itchy tags
Comfy Waistband
Plush-back wide waist elastic won't bind or pinch their skin
No Harmful Chemicals
Our fabrics are certified free of harmful chemicals
Functional Fly
Functional Fly for ease and comfort
Machine Washable
Our organic cotton is not treated and may shrink 7-10%
Organic Cotton
Certified organic cotton fabric used throughout
Always Tagless
No scratchy or itchy tags
Comfy Waistband
Plush-back wide waist elastic won't bind or pinch their skin
No Harmful Chemicals
Our fabrics are certified free of harmful chemicals
Functional Fly
Functional Fly for ease and comfort
Machine Washable
Our organic cotton is not treated and may shrink 7-10%


Why I chose this:
Free US Shipping
On all orders within the continental U.S.
Free US Returns
Breathe easy with free returns on all products
30-Day Guarantee
Completely comfy or your money back
What customers say about Lucas
- Reviews
- Questions
Great product
I have purchased these for both of my kids for years, it has helped with their skin which they both have eczema. They both report that they are comfortable.

Love these underwear
Love these for our 8 year old son. Nice quality. True to size. Super cute!

Very soft boy underwear!!!
My son loves wearing it!! It’s sooo soft!! Even after washing it. It’s still very soft and elastic. He is 7 and average size in height and weight. It fits him nicely with a little more room to grow into it. Would definitely recommend!
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Size Chart
All measurements are in inches and pounds.
All measurements are in inches and pounds.
For tips on how to measure, see our Fit Guide